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Threats to Our Ocean Fisheries Most people are familiar with the problems of the blue whale efforts to save endangered sea turtles and the many tragic tales of dolphins dying in tuna nets Many people do not realize the extreme danger that tuna and many other fish face There is an alarming decline in fish populations and this poses a dangerous threat to life in the ocean If fish decline so does the sea into and unstable environment Conservation measures and public support for them are badly needed For decades man has taken fish out of the sea seeming to believe that there is an endless supply and that this supply cannot be destroyed We take these fish out of the sea faster than they can be replaced According to National Marine Fisheries services 90 fish species found off the shores of the U S have been depleted Many more are in danger off being killed off Fish and shell fish that are at danger include cod flounder swordfish bluefin tuna blue marlin Atlantic lobster red snapper salmon and some species of shark These are just a few and the list gets longer every year The chief problem of the fish numbers being at an all-time low is over fishing Yet another environmental problem caused by the human race Modern technologically-advanced fishing fleets have the capacity to push most fish populations to the brink of extinction Modern fishing fleets have large factory steam trawlers that can easily haul in net loads of up to 100 metric tons of fish These vessels can work fishing grounds for many months at a time Echo sounding has been useful to fisherman by locating and determining the species and size of fish shoals Airplanes and helicopters are even used to detect the surface fish Some species such as squid are attracted with strong lights and then sucked into the ship with powerful vacuum pumps Because of these improved
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